スピンポンピングによるスピン流の創出と物理現象

摘要

Recent progress of spin pumping phenomena in various metallic multilayer structures is reviewed. Timedependent ferromagnetic magnetization pumps a spin angular-momentum flow into adjacent materials. The most important characteristic of spin pumping is that it has non-local effects. The spin-coherence region is on the same order as the characteristic size and thickness of recent micro-fabricated spintronics devices. A growing number of experiments and theories related to spin pumping support the importance of the phenomena and the value in the development of new spintronics devices.